Pulse‐period – moment‐magnitude relations derived with wavelet analysis and their relevance to estimate structural deformations
نویسندگان
چکیده
Motivated from the quadratic dependence of peak structural displacements to pulse period, $T_p$, pulse-like ground motions, this paper revisits $T_p$--$M_\text{W}$ relations motions generated near-source earthquakes with epicentral distances, $D\leq$ 20 km. A total 1260 are interrogated wavelet analysis identify energetic acceleration pulses (not velocity pulses) and extract their optimal amplitude, $a_p$, phase, $\phi$ number half-cycles, $\gamma$. The interrogation records is capable extracting shorter-duration distinguishable engineering significance, which override longer pulses. Our identified 109 normal faults, 188 reverse faults 125 strike-slip all distances Regression on extracted data concluded that same relation can be used for either or faults; whereas, a different $T_p$--$M_{\text{W}}$ proposed faults. study concludes moment magnitude, $M_{\text{W}}$, periods average larger than these Most importantly, our produces lower slope slopes presented by past investigators after merely fitting As result, yield $T_p$ values larger-magnitude (say $M_{\text{W}}>$ 6), allowing estimation dependable scale invariably $a_pT_p^{\text{2}}$.
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ژورنال
عنوان ژورنال: Earthquake Engineering & Structural Dynamics
سال: 2022
ISSN: ['0098-8847', '1096-9845']
DOI: https://doi.org/10.1002/eqe.3631